Pobation



Jan. 1, 1924 w. l. STlMPSON LAY ROCK SHAFT BEARING FOR LOOMS Filed Dec. 6, 1922 2 Sheets-Sheet l IN VENTOEX Q W l BY WWZZMAA ATTORNEV Jan. I, 1924 1,479,633 w. l. STIMPSON LAY ROCK SHAFT BEARING FOR LOOMS Filed Dec. 6, 1922 2 Sheets-Sheet 2 Fig.5 1 f ATTORNEY Patented Jan. I, 1.924.

UETE ATENT OFFHCE.

WALLACE I. STIMPSON, QF HOPEDALE, MASSACHUSETTS, ASSIGNOR TO DRAPER COR- PORATION, OF HOPEDALE, MASSACHUSETQTS, A CGRPORATIGN OF MAINE.

LAY ROCK-SHAFT BEARING- FOR LOOMS Application filed December 6, 1922. Serial No. 605,185.

To'aZZ whom it may concern:

Be "it-known that I, WALLACE I. STIMI-SON,

a citizen of the United States, residing at Hopedale, in the county of Worcester and I State of. Massachusetts, have invented an Improvement in Lay Rock-Shaft Bearings for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings re resenting like parts.

This invention re ates to looms and more particularly to the lay rock-shaft bearings.

The constant rocking movement of the lay rock-shaft durin weaving produces wear 16 and lost motion between the shaft and its bearings which in time admits objectionable play resulting in imperfect weaving. Heretofore various expcdients have been suggested for overcoming the objections incident to the wear of the rock-shaft and its bearings, but the present invention diiiers from these in that in the broad sense its object is to relieve the lay rock-shaft itself from all wear and to transmit such wear to other parts 28 readily and inexpensively renewable.

The present invention, among other advanta es, provides a cheap and simple hear ing w ich is susceptible of adjustment to present new wearing surfaces between the 80 relatively movable arts and eliminate wear on the lay rock-she, itself.

The invention will best be understood from the following description and accompan 'ing drawings of one or two good prac- 85 tica forms thereof. In the drawings:

Fi 1 is a rspective view of a portion of aoom an the lay rock-shaft with the present invention associated therewith;

Fig. 2 is an enlarged perspective view of one good form of the resent invention shown detached from the 30m;

Fig. 3 is an enlarged perspective view showing the parts in separated relation but 4:! ready for assembly;

Figv atis a section of the rocker-head and bushing;

Fig. 5 is an enlarged section, showing a ---"'i4-'-. Y slightly modified ioim of the HHEIBlJlGIl, and

Fig. 8 is a top plan view of the construc tion shown in Fig. 5 with the lay sword shown in section,

frame 0 y the loom, b

The loom frame 1, Fig. 1, may be of any usual construction and as shown the lay rock-shaft 2 is so ported near the lower portion of the side ames of the loom in rockmg movement. Secured to the lay rockshaft 2 are the lay swords 3 which are usually designed with a hub portion 4 which is secured to the lay rock-shaft. The upper portions of the lay swords 3 support the usual lay 5 which is actuated, as usual, from the crank-shaft or other going part of the loom, the construction being such that as the lay is actuated during weaving the lay swords and the lay rockshaft move with it, the latter being caused to rock.

It is usual in loom constructions to extend the rockshaft 2 beyond the side frames of the loom in order to support the rocking shoe usually employed in connection with the picking mechanism, but for clearness of illustration of the present invention, these details are not herein shown.

Each of the side frames of the loom is provided with an opening 3' as usual and, as shown in the present instance, a box plate 8 having elon ated openings 9 is' adjustably secured; re erably to the outside of the side Bolts 10. The box plate 8 has extendin inwardly therefrom a sleeve or hearing 11, ig. 3, preferably elongated, as shown, and the sleeve or hearing 11 extends throughthe opening 7 of the side frame of the loom inwardly thereof.

In accordance with the present invention there is interposed between the la rockshaft 2 and the sleeve or bearing 1 of the box plate a bushing which is secured to the lay rock-shaft and rocks with it between the lay rock-shaft and the inner surface of theslceve or hearing 11. In the resent invention, as indicated in Fig. 3, t e bushin 12 has an opening 13 for the reception 0 the lay rock-shaft 2, and secured to the bushing is the rocker-head 14 which, when the parts are in assembled relation as indicated in Fig. 1, has its face 15 closely adjacent to or in contact with the face portion 15' of the sleeve or bearing 11.

The rocker-head 14 has its inner face recessed, as at 16, to receive the hub MJItlOn 4 of the associated lay sword and t v pearl pherial portion of the rockenheed is P11) vided with a series of notches or openings 17, three being shown in the present in stance of the invention.

The lay sword Zl. as indicated in Fig. 3, has; a side projecting portion 18 and the notches 17 of the rm'kcnhead are shaped and formed to receive into any one of the notches the side extending portion 18 of the lay sword.

In :u'i-ordancc with the present invention, the llnlitt'dlttitl 1+ and its connected bushing: if an: associated with the lay rock-shaft; 2 in lined relation thcreto so that as the lay rocloshaft is ruched, as hereinheforc descrihcil. so also will be the rockcnhcad and bushing.

It may be desirable in some cases to secure the rockenhcad and hashing to the lay rockshalt by a set screw it), Fig. 3, but to insure that the parts are properly adjusted relatively ahout the lay roclt'shaft to present new wearing portions, as will presently appear, it is desirable that the rocker-hesd be provided with means such as thenotches 1.7 to insure the new adjusted relation of the parts.

\Vhcn the parts are assembled, as indi cated in Fig. l, the. box plate 8 is secured preferably to the outside of the 100m frame with the sleeve or hearing 11 projecting inwardly to the inside of the frame, and thc rocker-head ll and bushing 12 are mounted upon the lay roclvshaft 2 and secured thereto for rotativo or rocking movement therewith. To this end one of th notches 17 of the roclicnhcad is engaged with the side projecting portion 18 of the adjacent lay sword so that as the. lay sword moves back and forth during weaving, the rockcr-hcad and with it the bushing 12 which finds hearing in the sleeve or hearing 11, move with it. As a further :cans of insuring: such movement. and holding the parts in. associated relation. the set screw 19 may in some instances be employed. l

The construction and relation of the parts is sac, that all wear is talren otf of the lay rock-shaft and occurs between the bushing 12 and the sleeve or hearing 11. The sleeve it and hashing 12 preferably are formed of such relative hardness and of such materials that any wear between. these parts during the rocking movement of the lay rock-shaft will be exerted on the sleeve 12. Vvhen the sleeve 12 has become worn. so as to materially alter the path of lay movement. it is only necessary to back off the hox plate 8 to permit disengagement of the rocker-head notch 17 from the lay sword flange or projection 18 and then turn the rocker-head and bush- .ing 12 which is secured thereto to prese t: a new hearing portion hetween the bushing 12 and the sleeve or hearing 11, and reengagc one of the other notches with the flange 18 of the associated. lay sword. Of course if the screw 19 is also employd, will he appro 'n'iately manipulated when the rorlnznhcad and bushing have been turned to their new position and a fresh notch 17 of the head engaged with the lay sword. The box plate 8 may then lrc'set up and Weaving continued with accuracy.

The rocluzuhead H as shown is provided with three notches 17 but any appropriate number may be employed. and when the bushing 12 has become Worn in its different portions to an objectionable degree, a new bushing and. rocker-head may be substituted for the old one.

In the form of the invention as disclosed by Figs. *2. 3 and 4, the bushing 12 is made integral with the rocker-head 14, and such construction is cheap and easily manufactured by casting or otherwise.

In some -ascs, however, it. may he desirsilc to form the bushing 12 and the rockerhead 14.- separately, so that when the bushing itself becomes Worn in is several portions, it may be detached from the associated rocker-head and a new bushing substituted therefor.

This modified form of construction is indicatcd in Figs. 5 and 6 wherein the rockerhcad 20 is made separate from the bushing 21 and the bushing and head are secured to- ;rcthcr by detachable means such as the bolt- 212. In all other respects, however, the parts are as described for the form of the invention indicated in Figs. 2, 3 and 4.

It is sometimes desirable to provide lubricating means between the bushing 12 or 21 and the sleeve or hearing 11, and these may he conveniently provided by holes 23, as more clearly indicated in Figs. 5 and G.

\Vhat is claimed is:

1. In a loom, the combination of the lay rock-shaft, lay swords having hubs secured to the lay rocleshaft, a rocker head having a bushing; mounted on the lay rock-shaft. and. provided with a recessed face for receiving the hub of a lay sword and wit i a pin rality of notches constructed and arranged. to engine the lay sword and hold .the rocker headland hashing in adjusted position on the lay rock-shaft. and a holding plate hair-- ing a sleeve into which the bushing extends.

2. In a loom, the combination of the lay roclcslial't, lay swords secured to the lay rocleshalt, a rocker-head having a husl'iing mounted on the lay rock-shaft, means for securing the rocker-head and bushing to the lay rock-shaft in dillerent rotative positions that the rocker-head and bushing may rock with the lay rock-shaft, and a plate secured to the loom frame and having a hearing box into which the bushing extends.

In a loom, the conu'iiaation ot' the lay rock-shaft, lay swords having: huh portions secured to the lay roclr shaft, a hearing sleeve secured to the loom side and extend ing towards the hub of the adjacent lay sword a rocker head interposed between the end of the bearing sleeve and the hub of the adjacent lay. sword and having a bushing extending from the rocker head into the sleeve bearing, and means for securin the bushing to the lay rock-shaft in di erent rotative positions relative thereto.

4. In a loom, the combination of the lay rock-shaft, lay swords having hub portions secured to the lay rock-shaft inside the side frames-of the-loom, a. bearing sleeve secured to the outer portion of the loom frame and extending inwardly towards the hub of the adjacent la sword, a bushing mounted on the lay roc -shaft, means for securing it to the lay rock-shaft in different rotative positions of adjustment and for rocking movement therewith, said bushing being extended into the bearing sleeve and confined from endwise movement between bearing sleeye and the hub of the adjacent lay sword.

5. In a loom, the combination of the lay rock-shaft, la swords secured thereto, a box-holding p ate secured to the loom frame and having a box-bearing extending therefrom, a rocker-head having a detachable bushing for the reception of the rock-shaft and extending into the boxbearing of the box-holding plate, means for securing the rocker head and bushing to the lay rockshaft to rock therewith that any weer due to rock-shaft movement may take place between the bushing and the box-bearing.

In testimony whereof, I have signed my name to this specification.

WALLACE I. STIMPSON. 

